81 x 9 = 801. What must you do to make the this equation true?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

What has a bottom at the top?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Which part of London exists in France as well ?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

How many times in a given day, minutes and hour clock comes in a straight line ?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?